Re: The Next Coil

From: 	richard hull[SMTP:rhull-at-richmond.infi-dot-net]
Sent: 	Thursday, July 31, 1997 8:14 PM
To: 	Tesla List
Subject: 	Re: The Next Coil

At 08:24 PM 7/30/97 -0500, you wrote:
>From: 	Greg Leyh[SMTP:lod-at-pacbell-dot-net]
>Sent: 	Wednesday, July 30, 1997 3:52 PM
>To: 	Tesla List
>Subject: 	Re: The Next Coil
>Malcolm Watts wrote:
>> I'd be interested to hear more about those results and the type of
>> cap and method of connection if poss.  Lo-Z to the streamer sounds
>> like *it*, esp. as uS timescales are far faster than electrical
>> propagation along the resonator. Sounds like 2MV is close to the
>> design goal. Sounds like a real brute - yeah!
>>  Any reason for picking the particular inductance values you have?
>> Malcolm
>Yes, indeed!  With the new larger Ctop, I became concerned that the
>output impedance of the sec would drop too low.  The Lsec was chosen
>to get the impedance back up to around 20000 ohms, which seems to
>work well.  Then the other component values, all the way back to the 
>'wall socket', just fall out of the equations assuming a design goal
>of about 15 ohms for Zpri.  A bit of handwaving, but that's the best
>empirical data that I have at the moment.
>Actually, my spreadsheet predicts a Vout just over 1MV, 
>but that assumes about 50% efficiency.


I was elated and vindicated with Telsa's comments in the CSN that design
from the terminal load backwards might prove to be the ideal design
direction.  I had done it since about 1990. (when I frst noted large and
still larger capacities improved effective sparking distance)  I wrote about
this Teslarian wisdom and my confirmation of it in my 1994 book on his CSN
for Tesla coil builders.

My first major observation of the effect was serendipitous in March of 1990.
With more dinking around with the concept, I was sold forever by late 1990
that this was the way to go for increased system performance and have
written in lots of articles in TCBA News, and extoled the virtues of massive
loadings since that time up to present.

It is good to see someone else thinking this way too.  Good luck with your
new monster system.

Richard Hull, TCBOR